How much does insulation cost in Townsville?
Ceiling batts in Townsville cost $13–$38 a square metre installed, which comes to $1,300–$4,325 across the ceiling of a three-bedroom house. Walls are cheapest to fill while the frame is open, at $11–$27, and underfloor work runs $16–$49. The average daily top here stays above 30 °C from November through March (BOM averages), so the job in this city is mostly about stopping the sun's heat getting into the rooms below, not holding warmth in. That changes which product and which R-value figure you should be comparing between quotes.
Comparing cities, or after the Australia-wide picture? See the national guide: Insulation cost in Australia.
Detailed Pricing — Insulation Cost in Townsville 2026
| Service | Low | Typical | High |
|---|---|---|---|
| Ceiling insulation batts (per sqm installed) | $13/sqm | $22 | $38 |
| Wall insulation batts, open frame (new build or renovation, per sqm installed) | $11/sqm | $16 | $27 |
| Underfloor insulation (per sqm installed) | $16/sqm | $27 | $49 |
| Ceiling insulation – 3-bed home (total) | $1,300total | $2,700 | $4,325 |
| Wall insulation – 3-bed home (total) | $1,625total | $2,700 | $4,325 |
| Underfloor insulation – 3-bed home | $1,300total | $2,150 | $3,450 |
| Reflective foil insulation (per sqm) | $9/sqm | $15 | $24 |
| Spray foam insulation (per sqm) | $32/sqm | $54 | $110 |
| Blown-in / loose-fill (per sqm) | $19/sqm | $27 | $54 |
| Ceiling insulation top-up over existing (per sqm installed) | $11/sqm | $19 | $32 |
| Remove old insulation (per sqm) | $9/sqm | $16 | $27 |
| Labour only (insulation installer, per hr) | $43/hr | $65 | $86 |
| Retrofit wall insulation, existing walls (blown-in or injected, per sqm) | $27/sqm | $43 | $76 |
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Get Townsville quotes →Prices include GST. Based on Townsville metro area, October 2026. Outer suburbs may vary.
What Affects Insulation Costs in Townsville
Zone 1: keeping heat out
Townsville is in climate zone 1 of the National Construction Code, the hot humid summer, warm winter zone. Roof and ceiling products carry an "up" R-value for winter heat flow and a "down" R-value for summer heat flow, and here the down figure matters most. The federal Your Home guide adds that, in this zone, a foil blanket or membrane laid under the roofing resists radiant heat; foil is $9–$24 a square metre.
Four-bedroom ceilings
Our three-bedroom total assumes a modest ceiling, yet 39.4% of Townsville dwellings have four or more bedrooms, above the 34.8% national share (ABS 2021 Census). More floor area means more square metres of batts, so a larger home's total climbs with it. Ask every installer to show the area they measured and the rate they applied, which makes two quotes easy to line up.
A roof space in summer
From November to March the average maximum at Townsville Aero sits above 30 °C (BOM averages), and the air trapped under a tin or tile roof gets far hotter than that. Heat stress limits how long anyone can safely work up there, which can stretch the hours billed at $43–$86. July, averaging 25.2 °C, is the gentlest month for ceiling work.
Storms, leaks and old batts
The Bureau of Meteorology gives the cyclone season as November to April, and February is the wettest month here at 312.4 mm on average (BOM averages). Batts that have been soaked by a roof leak lose much of their value and may need pulling out first, at $9–$27. For floors in air-conditioned homes, Your Home recommends cyclone-rated products with the foil facing outwards.
Wiring, downlights and asbestos
Before insulation goes into an existing house, Your Home advises getting a licensed electrician to check the wiring and fittings. Installers must also leave the maker's clearances around hot items such as halogen downlights and flues, so swapping to LED downlights rated to be covered lets the batts run unbroken. Where an old ceiling may hold asbestos, get a licensed assessor in before a single sheet is moved.
Retrofitting walls and floors
Walls are cheap to insulate while the studs are exposed in a renovation. Once the linings are on, the product has to be blown or injected in, at $27–$76, more than double the open-frame rate. Underfloor insulation for a three-bedroom house is $1,300–$3,450, and it only works where there is room to get under the floor.
Rebates and finance
No Australian Government rebate covers home insulation, and the federal energy.gov.au rebate finder lists no Queensland insulation scheme either, so plan on the full installed price. The Household Energy Upgrades Fund does arrange cheaper finance through participating lenders for upgrades that include insulation, which spreads the cost over time rather than cutting it.
How to Save Money on Insulation Cost in Townsville
Insulation Cost in Townsville by Home Size
Square metres do the scaling. Say a larger home has 130 square metres of ceiling and 40 of it is soaked batts that need pulling out first: 130 square metres at $13–$38 plus 40 of removal at $9–$27 a square metre comes to $2,050–$6,020. The three-bedroom ceiling row covers a smaller roof as a single figure.
A roof space in summer shapes a job of that size here. From November to March it is far hotter than the air outside, which limits how long anyone can work up there and stretches the hours billed at $43–$86 an hour. Storm season, with a wet February, is when leaks soak batts; closed walls take the fill rate of $27–$76 a square metre; and underfloor is $1,300–$3,450 where the floor has room beneath.
Insulation Cost in Townsville: What the Quote Should Include
Townsville ceilings sit under a roof that gets very hot, so the quote should show the down R-value, the area measured and the rate applied. Those lines make a Townsville quote easy to check against the rows, and they show where the labour hours go.
- The ceiling area the installer measured, in square metres, and the rate applied to it within $13–$38 a square metre.
- Each product's down R-value, the figure for summer heat flow, written beside its up value.
- Foil under the roofing at $9–$24 a square metre, shown apart from any batts.
- Hours of labour assumed at $43–$86 an hour, and how the crew copes with a roof space that limits time spent working in it.
- Batts soaked by a leak: removal at $9–$27 a square metre listed first, or a top-up over dry, uncompacted batts at $11–$32.
- Clearing of old batts and roof-space dust, and carting it away, stated as in or out of the price.
- For a bigger home, the whole-ceiling area, not the three-bedroom total of $1,300–$4,325, so a four-bedroom roof is priced on its own square metres.
- Walls: open-frame batts at $11–$27 a square metre in a renovation, blown or injected fill at $27–$76 a square metre in lined walls, underfloor only with room beneath.
- For a tenant, the owner or agent who has agreed to the work named on the quote, with dates, warranty, payment stages and GST.
Frequently Asked Questions — Insulation Cost in Townsville
Our Methodology
These are independent estimates from public cost guides, marketplaces and industry rate data, and no tradesperson can influence them, so always get a few quotes. Last reviewed October 2026. Read our full methodology →